中文

通过正则商求解的相对Dolbeault几何Langlands问题

代数几何 2025-09-09 v2

摘要

X=G/HX = G/H为一个具有abelian regular centralizer且无type N根的affine homogeneous spherical variety。在本文中,我们为M=TXM = T^*X提出Dolbeault setting下的relative geometric Langlands conjecture。更具体地,我们 conjectured一个Fourier-Mukai二义性,其Dolbeault period sheaf与一个与Ben-Zvi、Sakellaridis和Venkatesh的dual symplectic representation的polarization closely resemble Dirac-Higgs bundle的sheaf的构建密切相关。这些conjecture可视为Hitchin关于symmetric spaces的brane duality的generalization。我们在多个情形下验证了这些conjecture,包括Friedberg-Jacquet情形X=GL2n/GLn×GLnX = GL_{2n}/GL_n\times GL_n、Jacquet-Ichino情形X=PGL23/PGL2X = PGL_2^3/PGL_2、Rankin-Selberg情形X=GLn×GLn+1/GLnX = GL_n\times GL_{n+1}/GL_n以及Gross-Prasad情形X=SOn×SOn+1/SOnX = SO_n\times SO_{n+1}/SO_n。我们的主要工具是正则商的理论,该理论在HM24中针对symmetric spaces进行了描述。

关键词

引用

@article{arxiv.2409.15691,
  title  = {Relative Dolbeault Geometric Langlands via the Regular Quotient},
  author = {Thomas Hameister and Zhilin Luo and Benedict Morrissey},
  journal= {arXiv preprint arXiv:2409.15691},
  year   = {2025}
}

备注

v2: Added assumptions on flatness of regular centralizers, and corrected 2 critical errors in main statements: the placement of the exterior algebra in the Dirac-Higgs bundle in Conjecture 1.9 and the statement of our main global result, Conjecture 1.10, which is a weaker version of Conjecture 1.9 that is proven in examples. Sections 2, 4, and 5 have been heavily re-written